Chemical Bonds

Ionic bond

• electrostatic forces b/w ion of opposite charges

• norm b/w non metal and metal

• makes solids

• strongest bonds

• brittle

• crystalline

• break with smooth surface(cleaved)

• lots of energy required to break

Covalent bond

• sharing electron b/w two atoms

• norm b/w two or more non metals

• orbital/electron clouds overlap

• more flexible

• most compounds exist as molecules (only covalent)

Metallic bond

• attraction b/w positive nuclei of metals and sea of electrons

• shares electrons like crazy

• fixed cations, electrons flow

• malleable

• ductile

Octet rule:

• atoms tend to gain lose share what’re they need to do in order to reach eight electrons

• full s and full p

Lewis symbols: